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Minecraft.World/DataOutputStream.cpp

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+#include "stdafx.h"
+#include "BasicTypeContainers.h"
+
+#include "DataOutputStream.h"
+
+//Creates a new data output stream to write data to the specified underlying output stream. The counter written is set to zero.
+//Parameters:
+//out - the underlying output stream, to be saved for later use.
+DataOutputStream::DataOutputStream( OutputStream *out ) : stream( out ), written( 0 )
+{
+}
+
+// 4J Stu - We cannot always delete the stream when we are destroyed, but we want to clear it up as there
+// are occasions when we don't have a handle to the child stream elsewhere and want to delete it
+void DataOutputStream::deleteChildStream()
+{
+	delete stream;
+}
+
+//Writes the specified byte (the low eight bits of the argument b) to the underlying output stream.
+//If no exception is thrown, the counter written is incremented by 1.
+//Implements the write method of OutputStream.
+//Parameters:
+//b - the byte to be written.
+void DataOutputStream::write(unsigned int b)
+{
+	stream->write( b );
+	// TODO 4J Stu - Exception handling?
+	written++;
+}
+
+void DataOutputStream::flush()
+{
+	stream->flush();
+}
+
+//Writes b.length bytes from the specified byte array to this output stream.
+//The general contract for write(b) is that it should have exactly the same effect as the call write(b, 0, b.length).
+//Parameters:
+//b - the data.
+void DataOutputStream::write(byteArray b)
+{
+	write(b, 0, b.length);
+}
+
+//Writes len bytes from the specified byte array starting at offset off to the underlying output stream.
+//If no exception is thrown, the counter written is incremented by len.
+//Parameters:
+//b - the data.
+//off - the start offset in the data.
+//len - the number of bytes to write.
+void DataOutputStream::write(byteArray b, unsigned int offset, unsigned int length)
+{
+	stream->write(b, offset, length);
+	// TODO 4J Stu - Some form of error checking?
+	written += length;
+}
+
+//Closes this output stream and releases any system resources associated with the stream.
+//The close method of FilterOutputStream calls its flush method, and then calls the close method of its underlying output stream.
+void DataOutputStream::close()
+{
+	stream->close();
+}
+
+//Writes out a byte to the underlying output stream as a 1-byte value. If no exception is thrown, the counter written is incremented by 1.
+//Parameters:
+//v - a byte value to be written.
+void DataOutputStream::writeByte(byte a)
+{
+	stream->write( a );
+}
+
+//Converts the double argument to a long using the doubleToLongBits method in class Double,
+//and then writes that long value to the underlying output stream as an 8-byte quantity,
+//high byte first. If no exception is thrown, the counter written is incremented by 8.
+//Parameters:
+//v - a double value to be written.
+void DataOutputStream::writeDouble(double a)
+{
+	__int64 bits = Double::doubleToLongBits( a );
+
+	writeLong( bits );
+	// TODO 4J Stu - Error handling?
+	written += 8;
+}
+
+//Converts the float argument to an int using the floatToIntBits method in class Float,
+//and then writes that int value to the underlying output stream as a 4-byte quantity, high byte first.
+//If no exception is thrown, the counter written is incremented by 4.
+//Parameters:
+//v - a float value to be written.
+void DataOutputStream::writeFloat(float a)
+{
+	int bits = Float::floatToIntBits( a );
+
+	writeInt( bits );
+	// TODO 4J Stu - Error handling?
+	written += 4;
+}
+
+//Writes an int to the underlying output stream as four bytes, high byte first. If no exception is thrown, the counter written is incremented by 4.
+//Parameters:
+//v - an int to be written.
+void DataOutputStream::writeInt(int a)
+{
+	stream->write( (a >> 24) & 0xff );
+	stream->write( (a >> 16) & 0xff );
+	stream->write( (a >> 8) & 0xff );
+	stream->write( a & 0xff );
+	// TODO 4J Stu - Error handling?
+	written += 4;
+}
+
+//Writes a long to the underlying output stream as eight bytes, high byte first.
+//In no exception is thrown, the counter written is incremented by 8.
+//Parameters:
+//v - a long to be written.
+void DataOutputStream::writeLong(__int64 a)
+{
+	stream->write( (a >> 56) & 0xff );
+	stream->write( (a >> 48) & 0xff );
+	stream->write( (a >> 40) & 0xff );
+	stream->write( (a >> 32) & 0xff );
+	stream->write( (a >> 24) & 0xff );
+	stream->write( (a >> 16) & 0xff );
+	stream->write( (a >> 8) & 0xff );
+	stream->write( a & 0xff );
+	// TODO 4J Stu - Error handling?
+	written += 4;
+}
+
+//Writes a short to the underlying output stream as two bytes, high byte first.
+//If no exception is thrown, the counter written is incremented by 2.
+//Parameters:
+//v - a short to be written.
+void DataOutputStream::writeShort(short a)
+{
+	stream->write( (a >> 8) & 0xff );
+	stream->write( a & 0xff );
+	// TODO 4J Stu - Error handling?
+	written += 2;
+}
+
+//Writes a char to the underlying output stream as a 2-byte value, high byte first.
+//If no exception is thrown, the counter written is incremented by 2.
+//Parameters:
+//v - a char value to be written.
+void DataOutputStream::writeChar( wchar_t v )
+{
+	stream->write( (v >> 8) & 0xff );
+	stream->write( v & 0xff );
+	// TODO 4J Stu - Error handling?
+	written += 2;
+}
+
+//Writes a string to the underlying output stream as a sequence of characters.
+//Each character is written to the data output stream as if by the writeChar method.
+//If no exception is thrown, the counter written is incremented by twice the length of s.
+//Parameters:
+//s - a String value to be written.
+void DataOutputStream::writeChars(const wstring& str)
+{
+	for( unsigned int i = 0; i < str.length(); i++)
+	{
+		writeChar( str.at( i ) );
+		// TODO 4J Stu - Error handling?
+	}
+	// Incrementing handled by the writeChar function
+}
+
+//Writes a boolean to the underlying output stream as a 1-byte value.
+//The value true is written out as the value (byte)1; the value false is written out as the value (byte)0.
+//If no exception is thrown, the counter written is incremented by 1.
+//Parameters:
+//v - a boolean value to be written.
+void DataOutputStream::writeBoolean(bool b)
+{
+	stream->write( b ? (byte)1 : (byte)0 );
+	// TODO 4J Stu - Error handling?
+	written += 1; 
+}
+
+//Writes a string to the underlying output stream using modified UTF-8 encoding in a machine-independent manner.
+//First, two bytes are written to the output stream as if by the writeShort method giving the number of bytes to follow.
+//This value is the number of bytes actually written out, not the length of the string. Following the length,
+//each character of the string is output, in sequence, using the modified UTF-8 encoding for the character.
+//If no exception is thrown, the counter written is incremented by the total number of bytes written to the output stream.
+//This will be at least two plus the length of str, and at most two plus thrice the length of str.
+//Parameters:
+//str - a string to be written.
+void DataOutputStream::writeUTF(const wstring& str)
+{
+	int strlen = (int)str.length();
+	int utflen = 0;
+	int c, count = 0;
+
+	/* use charAt instead of copying String to char array */
+	for (int i = 0; i < strlen; i++)
+	{
+		c = str.at(i);
+		if ((c >= 0x0001) && (c <= 0x007F))
+		{
+			utflen++;
+		}
+		else if (c > 0x07FF)
+		{
+			utflen += 3;
+		}
+		else
+		{
+			utflen += 2;
+		}
+	}
+
+	//if (utflen > 65535)
+	//	throw new UTFDataFormatException(
+	//	"encoded string too long: " + utflen + " bytes");
+
+	byteArray bytearr(utflen+2);
+
+	bytearr[count++] = (byte) ((utflen >> 8) & 0xFF);
+	bytearr[count++] = (byte) ((utflen >> 0) & 0xFF);  
+
+	int i=0;
+	for (i=0; i<strlen; i++)
+	{
+		c = str.at(i);
+		if (!((c >= 0x0001) && (c <= 0x007F))) break;
+		bytearr[count++] = (byte) c;
+	}
+
+	for (;i < strlen; i++)
+	{
+		c = str.at(i);
+		if ((c >= 0x0001) && (c <= 0x007F))
+		{
+			bytearr[count++] = (byte) c;
+
+		}
+		else if (c > 0x07FF)
+		{
+			bytearr[count++] = (byte) (0xE0 | ((c >> 12) & 0x0F));
+			bytearr[count++] = (byte) (0x80 | ((c >>  6) & 0x3F));
+			bytearr[count++] = (byte) (0x80 | ((c >>  0) & 0x3F));
+		}
+		else
+		{
+			bytearr[count++] = (byte) (0xC0 | ((c >>  6) & 0x1F));
+			bytearr[count++] = (byte) (0x80 | ((c >>  0) & 0x3F));
+		}
+	}
+	write(bytearr, 0, utflen+2);
+	delete[] bytearr.data;
+}
+
+// 4J Added
+void DataOutputStream::writePlayerUID(PlayerUID player)
+{
+#if defined(__PS3__) || defined(__ORBIS__) || defined (__PSVITA__)
+	for(int idPos=0;idPos<sizeof(PlayerUID); idPos++)
+		writeByte(((char*)&player)[idPos]);
+#elif defined(_DURANGO)
+	writeUTF(player.toString());
+#else
+	writeLong(player);
+#endif // PS3
+}